We Love Cutting Metal With The Thermal Dynamics Cutmaster 42

Portable plasma cutter works right out of the box with author's "wimpy" air compressor.

Published on: Jul 26, 2012

The Cutmaster performed flawlessly and struggled only when we tried cutting some half-inch steel that had welds and 1/8" plate welded to it.

Portability, dual voltage input, and the ability to operate on the output of a small portable compressor, make the Thermal Dynamic Cutmaster 42 a very handy tool.
Portability, dual voltage input, and the ability to operate on the output of a small portable compressor, make the Thermal Dynamic Cutmaster 42 a very handy tool.

Both of us were impressed with the machine's compact power, and intuitive ease of use.

The controls are simple -- a single dial for current based on voltage inputs. The internals take care of the rest of the Cutmaster's settings. Once you turn it on, it senses if sufficient air pressure is present (85 to 100 psi) and once it's satisfied, it lights a green pilot light indicating a "go." From there, the operator only has to pull the trigger on the SL40 torch to light a pilot arc, and apply that to a grounded work project to begin cutting.

Both compressors used in our tests supply about 6 scfm air flow at 90-100 psi, so one doesn't need a special compressor to use this plasma cutter.

The torch is simple to service and consumables in the tip of the torch are easy to replace.

The Cutmaster 42 is a fine machine in my book, and would be right at home in any farm shop or service truck.

For more information visit www.thermal-dynamics.com.